When will the arranger market include this feature already developed in a cell phone? Even those who can't play or read music could make a basic style. Or you could use your voice to play live an extra keyboard (ideal for me having too many keys).
Check this video:
http://www.youtube.com/watch?v=-QxN1u7KWDM&feature=player_embedded Victor
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Victor
Korg Pa3x 61 - Mediastation X76 - Yamaha Psr s900 - Korg Tr61 - Roland PK5A - NanoKontrol - Ensoniq SQ1 - Yamaha D85 organ